f (x)

x

a

f (x)

f (x)

x

b

x

c

Case Where No Root Is Found

Example: A Relative Minimum.

Calculate the root of this parabolic equation:

x2 – 6x + 13 = 0.

It has a minimum at x = 3.

Enter the equation as an expression:

Keys:

Display:

Description:

H



Selects Equation mode.

LX 2



Enters the equation.

…6 zLX › 

 

13 ‘

%:. º%-

 



/ 

Checksum and length.

 

/

 

More about Solving D–9

Page 333
Image 333
HP 33s Scientific manual More about Solving D-9, Example a Relative Minimum